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Published on: February 27, 2021
Fluoride removal using lanthanum incorporated chitosan beads.
Amit Bansiwal1, Dilip Thakre, Nitin Labhshetwar
1National Environmental Engineering Research Institute, India.
Colloids and Surfaces. B, Biointerfaces
|August 25, 2009
Summary
Lanthanum incorporated chitosan beads (LCB) effectively remove fluoride from water. This sustainable defluoridation method shows high adsorption capacity and can be regenerated, offering a promising solution for clean water access.
Area of Science:
- Environmental Science
- Materials Science
- Water Chemistry
Background:
- Fluoride contamination in water poses significant health risks.
- Developing efficient and sustainable defluoridation materials is crucial for public health.
- Naturally occurring biomaterials offer a sustainable basis for water treatment solutions.
Purpose of the Study:
- To design and synthesize a highly selective material for water defluoridation.
- To investigate the properties and performance of lanthanum incorporated chitosan beads (LCB).
- To optimize the synthesis and evaluate the adsorption capacity and kinetics of LCB for fluoride removal.
Main Methods:
- Chitosan beads were synthesized and incorporated with lanthanum using a precipitation method.
- Various synthesis parameters were optimized to enhance material performance.
- Characterization was performed using SEM, FTIR, XRD, and EDX; adsorption studies were conducted under varying conditions.
Main Results:
- Lanthanum incorporated chitosan beads (LCB) demonstrated a maximum fluoride adsorption capacity of 4.7 mg g⁻¹.
- Adsorption followed pseudo-first-order kinetics and Langmuir isotherm, indicating a spontaneous and feasible process.
- LCB showed good performance in real groundwater, with effective regeneration using ammonium chloride.
Conclusions:
- Lanthanum incorporated chitosan beads (LCB) are a highly selective and effective material for water defluoridation.
- The material exhibits excellent adsorption capacity, spontaneous adsorption kinetics, and good regenerability.
- LCB presents a sustainable and promising solution for removing fluoride from contaminated water sources.
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